The 26-year-old Brit "seemed to be having an amazing time" one eyewitness tells Us, adding that the Twilight star had "a few drinks and laughs" with a group of friends as live country music played. "He looked like a guy that was just trying to enjoy himself and get away . . . seems like a good kid!"

His pregnant hostess Witherspoon, meanwhile -- who's also hung out at Deer Lodge, according to witnesses -- was photographed lunching with a friend in West Hollywood on Saturday. The Oscar-winning actress endured her own cheating heartbreak back in 2006, when then-husband Ryan Phillippe strayed with Abbie Cornish, and hopes her Ojai spread will have a "calming effect" on her Water for Elephants costar, according to an insider.